TOP QUALITY High temperature resistant and durable NO BLOCKING Millions of tiny pores allow for efficient carbonation of beer and aeration prior to fermentation. The micrometre stone is ideal for force carbonating kegged beer or use as an aeration stone before fermentation. Resists clogging when kept clean and free of grease A MUST HAVE Essential for homebrewers who carbonate in kegs. Made of stainless steel 316, which offers better corrosion resistance than stainless steel 304. Suitable for beer carbonation EASY TO USE Connect your oxygen regulator or aeration pump to the stainless steel diffusion stone to aerate wort as beer flows through the line. Can be used inline with any kettle, pump, or counterflow/plate wort chiller 2 Micrometre Single Oxygenation Stone 1/2 inch NPT Male Fitting 1/4 inch Barb attachment for oxygen regulator or air pump connection Color: Silver Material: Metal Size: 5 cm Package Contents: 1 x Oxygenation Diffusion Stone Note: Light shooting and different displays may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3 cm.